Electric heater



E" A. ANTONINI ELECTRIC HEATER Dec. 29, 1931.

2 Sheets-Shet 1 Filed Dec. 26, 192? u 4% V W J E Q By 2mm A tiorney 5 A. ANTONINI ELECTRIC HEATER Dec. 29,1931

2 Sheets-Sheet 2 Filed Dec. 26, 1929 Inventor Q QM m A ttorney Patented Dec. 29, 1931 t UNITED STATES EDGAR A. ANTONINI, or ruoLum, camro nmn ELEUDRIC Application filed December 26, Serial No. 416,680. i

This invention. appertains to new and useful improvements in electrical heating, and more particularly to a heater for heating water in a pipe line.

The principal object of this invention is to provide an electrical water heater which may be readily installed in pipe lines, leading to sinks, bath tubs, wash tubs, and to various other household utilities.

In the following specification and claim, other important objects and advantages of the invention, will readily become apparent to the reader.

In the drawings V Figure 1 represents a side elevational view of the electrical heater and the'piping arrangement associated therewith.

Fig. 2 represents a fragmentary detail sectional view of the heater and associated pipe means.

Fig. 3 represents a vertical sectional View, taken substantially on the line 33 of Fig. 2. Fig. 4 represents a cross sectional view, taken substantially on the line 44 of Fig. 2.

Fig. 5 represents a fragmentary detail sectional view showing one of the binding posts. Referring to the drawings, wherein like numerals designate like parts, it can be seen that the novel heater includes a T-fitting 5,

.5 which is internally threaded at each of its ends. One upper end of the T-fitting receives the enlarged end '6 of'an elongated shell 7, which shell projects beyond the opposite upper end of the fitting and is internally threaded to receive the externally threaded head 8 of the pipe section 9, which pipe section 9 extends backwardly through the shell 7 and beyond the first mentioned end of the T-fitting.

The enlarged end 10 of theshell 7 is provided with a polygonal-shaped end enlargement 10 to permit a wrench to be engaged therewith, to facilitate the removal of the shell 7 interposed between the shell 7 and the pipe section 9 and has a tube 11 of di-electric material having the heating elements 12 embedded therein. 7

As is clearly, shown in Fig. 2, theenlargement 6 is hollow and internally threaded to receive the plug 13, which is also constructed of this novel device without departing from to permit the engagement therewith of a wrench or some other similar tool.

This plug 13- is provided with a air of openings through which the1di-electr1c tubes 14 are disposed, and through these tubes the s binding post 15 extends. These binding posts are equipped with nuts 16 to permit the proper conductor wire to be connected thereto. The inner end of each post 15 is connect-- ed to one end of the heating element 12.

It also will be seen in Fig. 2, that the other upper end of the T-fitting 5 receives one end of a cylindrical casing 17 and this casing 17 is externally threaded at its opposite end to engage within the internally threaded cap 18. A plug 19 is engaged within the lower end of the T-fitting, 5 and this plug is provided with a threaded bore engaged therethrough for receiving the upper end of the pipe 20. A T-fitting 21 connects a pipe with the outlet box 22 and also with a by-pass pipe 23. This by-pass pipe 23 has a valve 24 interposed therein and furthermore connects to the T-fitting 25, and at its lower end. One

upper end of this fitting 25 is connected to the outer end of the pipe section 9, while the water supply pipe 26 connects to the other end of the fitting 25.v

It can thus be seen that when it is desired that the water be heated, the valve 24.- may be closed, resulting in the flow of water through the heating unit. The water in passing through the pipe section 5 will be heated by I the surrounding heating coils, and will again be heated in passing along the outside of the 5'" shell 7. p

A heating unit constructed in accordance with the aforementioned invention will not only be practical and efiicient in use, but will be of low cost to manufacture, due to its extreme simplicity.

Some changes in shape, size, and materials, may be resortedto in the construction the spirit and scope of the invention as or; claimed hereinafter.

Having thus described my invention, what I claim as newis A heater of the character described comprising a fluid flow p p a in into which 163 the pipe projects, one end of the said casing being closed, said flow-pipe terminating at its inner end in close spaced relation to the closed end of the casing, a threaded head on the inner end of the flow pipe, a shell surrounding the said flow pipe and being provided with internal threads at one end for engagement with the said head, a heating element interposed between the shell and the flow pipe, the outer end of the said shell being provided With a eircumferential'ly extending enlargement provided With threads, the open end of the said casing being provided With internal threads for cooperation with the threads on the enlargement of the sleeve, and stop means on the flow pipe for disposition into the enlarged end portion of the sleeve to abut the said heating unit.

In testimony whereof I aflix my signature.

EDGAR A. ANTONINI. 

